1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24 */ 25 /* 26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 #pragma weak __fex_get_handling = fex_get_handling 31 #pragma weak __fex_set_handling = fex_set_handling 32 #pragma weak __fex_getexcepthandler = fex_getexcepthandler 33 #pragma weak __fex_setexcepthandler = fex_setexcepthandler 34 35 #include <fenv.h> 36 #include <ucontext.h> 37 #include <thread.h> 38 #include "fex_handler.h" 39 40 int fex_get_handling(int e) 41 { 42 struct fex_handler_data *thr_handlers; 43 int i; 44 45 thr_handlers = __fex_get_thr_handlers(); 46 for (i = 0; i < FEX_NUM_EXC; i++) 47 if (e & (1 << i)) 48 return thr_handlers[i].__mode; 49 return FEX_NOHANDLER; 50 } 51 52 int fex_set_handling(int e, int mode, void (*handler)()) 53 { 54 struct fex_handler_data *thr_handlers; 55 int i; 56 57 if (e & ~((1 << FEX_NUM_EXC) - 1)) 58 return 0; 59 thr_handlers = __fex_get_thr_handlers(); 60 for (i = 0; i < FEX_NUM_EXC; i++) { 61 if (e & (1 << i)) { 62 thr_handlers[i].__mode = mode; 63 thr_handlers[i].__handler = handler; 64 } 65 } 66 __fex_update_te(); 67 return 1; 68 } 69 70 void fex_getexcepthandler(fex_handler_t *buf, int e) 71 { 72 struct fex_handler_data *thr_handlers; 73 int i; 74 75 thr_handlers = __fex_get_thr_handlers(); 76 for (i = 0; i < FEX_NUM_EXC; i++) 77 if (e & (1 << i)) 78 (*buf)[i] = thr_handlers[i]; 79 } 80 81 void fex_setexcepthandler(const fex_handler_t *buf, int e) 82 { 83 struct fex_handler_data *thr_handlers; 84 int i; 85 86 thr_handlers = __fex_get_thr_handlers(); 87 for (i = 0; i < FEX_NUM_EXC; i++) 88 if (e & (1 << i)) 89 thr_handlers[i] = (*buf)[i]; 90 __fex_update_te(); 91 } 92